Finding the Fourth Proportional to 389,975.08, 584,962.80 and 140,657.08
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Solution
The fourth proportional to 389,975.08, 584,962.80 and 140,657.08 is: 210,985.68
Step by Step Solution
- Step 1: Write the proportion equation
389,975.08 : 584,962.80 = 140,657.08 : x - Step 2: Convert to fraction form
389,975.08/584,962.80 = 140,657.08/x - Step 3: Cross multiply
389,975.08x = 584,962.80 × 140,657.08 - Step 4: Simplify right side
389,975.08x = 82,279,159,356.62 - Step 5: Solve for x
x = 82,279,159,356.62/389,975.08 - Step 6: Final answer
x = 210,985.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.